> but human drawing is not that far from finding an image in a noise. If you start with empty paper, then refine it into sketch, then into colored image, then into more detailed image, etc. It's not that far off from refining image out of noise.

absolutely not, drawing is translating an idea into paper, it's not discovering what you want in the paper.

> It would eventually evolve into different artistic styles without humans

You were so close.... how many artistic styles do you know of? AI creations will be a style that will coexist with others, it won't replace a thing.